Floor joist and stud installation gauge



FIG. 1 is a top plan view of a floor joist and stud installation gauge showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 4 is a top end elevational view of FIG. 1, the rest of the gauge being omitted for ease of illustration;

FIG. 5 is a bottom end elevational view of FIG. 1, the rest of the gauge being omitted for ease of illustration. 

The ornamental design for a floor joist and stud installation gauge, as shown and described. 